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Dunsmore, CA
Joel P. Dunsmore, Sebastopol, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20080204041 | Differential Vector Network Analyzer - A measurement and correction method provides for a complete full correction of a true-mode system using only the single ended error matrix developed for 4 port correction of single ended measurements. The degree of misalignment of the balanced sources may be determined from these measurements. | 08-28-2008 |
| 20080258707 | Test Method for Frequency Converters with Embedded Local Oscillators - A method is presented where the phase trace is offset for each sweep such that the first point is always at zero degrees. The resulting traces are then averaged. The average reduces the noise in the phase trace and results in a less noisy group delay trace. | 10-23-2008 |
Marnie Dunsmore, San Francisco, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090111397 | POLAR MODULATION TRANSMITTER WITH ENVELOPE MODULATOR PATH SWITCHING - Methods and apparatus for controlling power in a polar modulation transmitter. An exemplary polar modulation transmitter includes a radio frequency power amplifier (RF PA), a phase path having circuitry operable to generate a constant amplitude phase modulated signal, and an amplitude path including an envelope modulator circuit having first and second envelope modulation paths. The RF phase modulated signal is applied to an RF input of the RF PA, while an envelope modulated power supply signal generated by a selected one of the first and second envelope modulation paths is coupled to a power supply input of the RF PA. The second envelope modulation path is selected during times when the power required by the RF PA is below some predetermined power level. During times when the RF PA requires power above the predetermined power level, the first envelope modulation path is selected. | 04-30-2009 |
Silas W. Dunsmore, Auburn, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20080313217 | METHOD AND APPARATUS FOR EXCHANGING SUB-HIERARCHICAL STRUCTURES WITHIN A HIERARCHICAL FILE SYSTEM - A method for replacing a first sub-hierarchy of a New Technology File System hierarchical filesystem (NTFS HFS) with a second sub-hierarchy is disclosed. The first sub-hierarchy includes a first root directory having at least one special system file, and a first plurality of files. The second sub-hierarchy includes a second root directory located in a second location of the HFS, a second plurality of files and at least one placeholder file corresponding to the at least one special system file. The method includes the steps of configuring the first plurality of files to branch from the first root directory once the first root directory is accessed through the second location, exchanging the first plurality of files with the second plurality of files, and exchanging at least one directory pointer corresponding to the at least one special system file with at least one directory pointer corresponding to the at least one placeholder file. | 12-18-2008 |
Thomas J. Dunsmore, Glendora, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20080245368 | HIGH FREQUENCY OSCILLATION RESPIRATORY THERAPY - A respiratory therapy device including a housing, a flow diverter structure, a high frequency pressure port (HF port), and an entrainment port. The housing defines a primary passageway having a patient interface side. The flow diverter structure is in fluid communication with the primary passageway and is characterized by the absence of a venturi tube. The HF port is configured for fluid connection to a source of oscillatory gas flow, and is fluidly associated with the flow diverter structure. The entrainment port is openable to ambient air, and is fluidly associated with the flow diverter structure. With this construction, the device is configured such that flow characteristics of gas flow from an external source are altered upon interacting with the flow diverter structure to create a pressure drop for drawing in ambient air through the entrainment port in delivering a percussive pressure therapy to the patient side. | 10-09-2008 |
| 20090126731 | PATIENT INTERFACE ASSEMBLY FOR RESPIRATORY THERAPY - A patient interface assembly includes a housing that defines an inlet port and an outlet port. A jet pump receives pressurized gas flow from the inlet port and delivers the gas flow to the outlet port. A nebulizer is fluidly coupled to the outlet port and positioned to introduce medication into the gas flow and deliver medicated gas flow to a patient. | 05-21-2009 |
| 20090126734 | RESPIRATORY THERAPY SYSTEM WITH ELECTROMECHANICAL DRIVER - A respiratory therapy system includes a driver unit and a patient interface device. The driver unit is adapted to deliver pressurized gas flow from a source to the patient interface device. At least one electronic valve can be used to deliver a desired flow to the patient interface device. | 05-21-2009 |
| 20100307487 | RESPIRATORY THERAPY DEVICE AND METHOD - A respiratory therapy device including a housing and an interrupter valve assembly. The housing includes a patient inlet, an exhaust outlet, a chamber, and a supply inlet. The interrupter valve assembly is associated with the housing and includes a control port fluidly connecting the patient inlet and the first chamber, and a valve body adapted to selectively obstruct fluid flow through the control port. In a passive mode, positive fluid flow to the supply inlet does not occur, and the interrupter valve assembly interacts with exhaled air create an oscillatory PEP effect. In an active mode, fluid flow to the supply inlet occurs and the interrupter valve assembly operates to create a CHFO effect. The respiratory device can serve as a passive oscillatory PEP device, and when connected to a positive pressure source, as an active device. | 12-09-2010 |